Quick Start Guide

Starting Ultra Messaging Daemons

# Starting Ultra Messaging Dynamic Routing Option <-

The DRO bridges disjoint topic resolution domains by forwarding multicast and/or unicast topic resolution traffic. Before installing and starting a DRO daemon (tnwgd) clear objectives and proper planning are very important. Approach this planning with the consideration that a DRO condenses your network into a single process. You must be clear about the traffic you expect to forward through a DRO. The following highlights some other specifics.

- Know your Topic Resolution Domains. See Topic Resolution Domains.

- Consider the size and quality of network paths into and out of your DROs. For example, DROs cannot efficiently forward messages from a 1GB path to a 100MB path.

- Fully examine any use of Late Join, taking care to configure retransmission options correctly.

# Persistent Store Daemon <-

The daemon, umestored, provides persistent store services. To start umestored, perform the following steps:

1. Create the cache and state directories.
   `$ mkdir umestored-cache ; mkdir umestored-state`

2. Create a simple umestored XML configuration file or use a sample configuration, ume-example-config.xml. For full details on Persistence, see Ultra Messaging Guide for Persistence.

3. Start the daemon.
   `$ umestored config.xml`

See also Umestored Man Page.